Some standard content:
1CS 73.100.99
Registration No.: 103202002
Coal Industry Standard of the People's Republic of China
MT/T 493--2002
Crusher for gate road
Crusher for gate road
Published on April 8, 2002
State Economic and Trade Commission
Easy to process - URL to pdf
Implemented on September 1, 2002
MT/T493-2002
This standard is a revision of the two standards MT/T493-1995 "General Technical Conditions for Crusher for Gate Road" and MT/T494-1995 "Types and Parameters of Crusher for Gate Road" according to the requirements of technological development. The main technical contents of this standard for the revision of MT/T493--1995 and MT/T494-1995 are as follows: This standard adds the specification parameters of the chute crusher, revises some technical data, and adds the requirements for the performance of the whole machine to meet the needs of current applications and future development. This standard replaces MT/T493--1995 and MT/T494-1995 standards from the date of implementation. This standard is proposed by the China Coal Industry Association. This standard is under the jurisdiction of the Coal Industry Coal Mine Special Equipment Standardization Technical Committee. The main drafting unit of this standard: Northwest Coal Mine Machinery Factory No. 1. The main drafter of this standard: Zhang Jiping.
This standard is entrusted to the Scraper Conveyor Branch of the Coal Industry Coal Mine Special Equipment Standardization Technical Committee for interpretation. 1 Scope
Coal Industry Standard of the People's Republic of China
Crusher
Crusher for gate road
MT/T493—2002
Replaces MT/T493-—1995
MT/T494—1995
This standard specifies the type and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of crushers for underground coal mines.
This standard is applicable to underground coal mine crushers (hereinafter referred to as crushers). 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB3836.1-2000 Electrical apparatus for explosive gas atmospheres Part 1: General requirements GB3836.2-2000 Electrical apparatus for explosive gas atmospheres Part 2: Flameproof type "d" GB3836.3-2000 Electrical apparatus for explosive gas atmospheres Part 3: Increased safety type \e" GB3836.4-1983 Explosion-proof electrical apparatus for explosive atmospheres Intrinsically safe circuits and electrical apparatus ";" GB/T13306-1991 Signage
MT/T100-1995
Inspection specification for hydraulic couplings for scraper conveyors MT/T101-2000
MT/T148-1997
Inspection specification for reducers for scraper conveyors
Speed reducer for conveyor
MT/T208—1995 Hydraulic coupling for scraper conveyor 3 Definitions
This standard adopts the following definitions.
3.1 Wheel crusher wheelcrusher
A machine that uses the impact of the blades mounted on a huge flywheel to crush large pieces of coal. 3.2 Jaw crusher
A machine that uses the extrusion of fixed tooth plates and movable tooth plates to crush large pieces of coal. 4 Crusher type
Crushers are divided into the following two types:
a) wheel crusher;
b) jaw crusher.
5 Basic parameters
5.1 Basic parameters of wheel crusher
National Economic and Trade Commission 2002- Approved on 04-08 and implemented on 2002-09-01
5.1.1 Crushing capacity shall comply with the provisions of Table 1. 500
MT/T493--2002
The rated power of the motor shall comply with the provisions of Table 2. 5.2.2
5.1.3 Feed block size (cross section): ≤1200mm×1200mm. 5.1.4 Discharge block size (any direction): ≤300mm. 5.2 Basic parameters of jaw crusher
5.2.1 Crushing capacity, feed port width, title plate height and discharge port height shall comply with the provisions of Table 3. Table 3
Crushing capacity/(t·h-1)
Feed port width/mm
Title plate height/mm
Discharge Mouth height/mm
5.2.2 Rated power of the motor is: 55kW. 5.2.3 Eccentricity is: 35mm.
6 Method for compiling crusher models
6.1 Method for compiling wheel crusher models is as follows: P
Model example:
40~370
Modify the serial number, with (A), (B), (C)... to indicate the crushing capacity in sequence, t/h
-wheeled
crusher
crushing capacity is 1500t/h, the second modified chute design is expressed as: PLM1500(B). 6.2 Method for compiling rated crusher models is as follows: 2
Model example:
MT/T 493--2002
Revision serial number, (A), (B), (C)...represents plate height in sequence, mm
Feeding port width, mm
Crusher
Feeding port width is 980mm, plate height is 650mm, the second revised design of the chute is represented by the type crusher: PEM980/650(B).
7 Technical requirements
7.1 Basic requirements
7.1.1 Crusher shall comply with the requirements of this standard and be manufactured according to drawings and technical documents approved by the prescribed procedures. 7.1.2 The installation dimensions and connection dimensions of the same type of crusher components shall be the same, and similar components shall be interchangeable. 7.1.3 The electrical components of the crusher shall comply with the relevant provisions of GB3836.1~GB3836.4. 7.1.4 Crusher shall be equipped with mechanical or electrical overload protection devices. 7.1.5 The crusher should be stable and free of vibration and metal impact noise when running without load, and the overall noise of the whole machine shall not exceed 90dB(A). 7.2 Structural requirements
7.2.1 The driving device of the crusher shall be able to meet the requirements of interchangeable installation of the left and right sides. 7.2.2 The crushing shaft of the wheel crusher can only rotate in the specified direction. 7.2.3 The crusher must be equipped with a safety device and should be sensitive and reliable. The transfer machine should stop immediately after the locking system takes effect. 7.3 Performance requirements
7.3.1 The crushing capacity of the crusher under normal operating conditions shall not be less than the design value. 7.3.2 The size of the material discharged by the crusher under normal operating conditions shall meet the design value. 7.4 Requirements for main components
7.4.1 The hydraulic coupling shall comply with the relevant provisions of MT/T208. 7.4.2 The reducer shall comply with the relevant provisions of MT/T148. 7.4.3 The transmission belt shall have flame retardant properties. 7.4.4 The static balance accuracy of the pulley shall meet the design requirements. 7.4.5 The hardness of the crushing teeth after surfacing or spray welding shall not be less than 45HRC. 7.4.6 The pressure of the water guide in the water sprayer of the neck crusher shall not be less than 7.85MPa. 7.5 Manufacturing and assembly requirements
7.5.1 Raw materials, parts, purchased parts, and electrical components shall be inspected according to their respective technical requirements, and can only be put into the warehouse for use and assembly after being proved to be qualified or having documents sufficient to prove their qualification.
7.5.2 The weld should be fully penetrated, smooth, continuous, and free of flow marks, and the weld size should meet the design requirements. 7.5.3 There shall be no leakage at all joints and seals. 7.5.4 The lubrication system shall be unobstructed.
7.5.5 The temperature rise of each bearing shall not exceed 65℃. 7.5.6 The connection between the wheel crusher and the transfer machine should be reliable. The upper and lower misalignment of the middle plate and the bottom plate at the interface shall not exceed 2mm, and the left and right misalignment shall not exceed 3mm.
MT/T493—2002
7.5.7 The overall diagonal twist of the front plate shall not exceed 8mm, and the bending in the length direction shall not exceed 3mm. 7.5.8 The diagonal twist of the bottom beam of the bridge frame and the driving end base of the driving end frame shall not exceed 3mm, and the bending along the length direction shall not exceed 3mm.
7.5.9 The gap between the outlet crossbeam and the upper fixed bracket of the movable plate shall not be greater than 4mm, and the gap between the upper grinding plate at the bottom of the movable plate and the lower grinding plate on the connecting base bracket shall not be greater than 2mm. 7.6 Appearance oiling requirements
The exposed non-processed surface of the crusher shall be oiled, and anti-rust measures shall be taken on the exposed processed surface. 8 Test method
8.1 The appearance quality and welds shall be inspected visually and with steel rulers, vernier calipers and other tools. 8.2 Idle running test. The crusher shall be started and observed for 5 times. No interference, jamming and drumming shall occur in each moving part. Then a 24-hour continuous idle running test shall be carried out. After the idle running test, temperature rise and sealing tests shall be carried out. 8.3 During the idle running test, the noise value shall be measured with a sound level meter in two horizontal directions perpendicular to each other 1m away from the crusher. The measurement shall be made three times and the arithmetic average shall be taken.
8.4 The water guide body of the sprinkler shall be subjected to a water pressure test with a pressure of 7.85MPa, and the pressure shall be maintained for 5 minutes. No leakage shall occur. 8.5 The hardness of the blade teeth shall be tested with a hardness testing machine. 8.6 The static balance of the pulley shall be tested with a static balance test stand. During the idling test, the locking system of the safety device shall be tested by manual pulling. 8.7
8.8 The test method for the reducer shall be carried out in accordance with the provisions of MT/T101. 8.9 The test method for the hydraulic coupling shall be carried out in accordance with the provisions of MT/T100. 9 Inspection rules
9.1 Factory inspection
9.1.1 The crusher shall be inspected and qualified by the quality inspection department of the manufacturer, and the product certificate shall be issued before it can be shipped. 9.1.2
The factory inspection items, inspection requirements and methods of the crusher shall comply with the provisions of Table 4. Table 4
Inspection items
Appearance and weld
Edge hardness
Static balance test
Water conductor pressure
Manufacturing and assembly
Idle running test
Temperature rise test
Noise test
Seal test
Safety test
According to 7.5.2, 7.6, 8.1
According to 7.4.5, 8.5
According to 7.4.4, 8.6
According to 7.4.6 and 8.4
Inspection requirements and methods
According to 7.5.6, 7.5.7, 7.5.8, 7.5.9 and 8.1
According to 7.1.5 and 8.2
According to 7.5.5 and 8.2
According to 7.1.5 and 8.3
According to 7.5.3 and 8.2
According to 7.2.3 and 8.7
The crusher is fully inspected item by item before leaving the factory. If all items are qualified, the crusher is judged to be qualified. If the crusher has unqualified items, it is allowed to readjust, repair or replace parts. The crusher must be re-inspected after readjustment, repair or replacement of parts. After passing the inspection, the crusher is still judged to be qualified. 4
10 Marking, packaging, transportation and storage
MT/T493-2002
10.1 The crusher should have a product label fixed in a conspicuous position. The type and size of the label should comply with the provisions of GB/T13306. 10.2 The product label should indicate the following main contents: a) Product model and name;
b) Product main parameters;
c) Production date or production batch number;
d) Manufacturer's name.
10.3 The crusher can be disassembled and packaged in detachable parts. The packaging should meet the transportation requirements. 10.4 The documents accompanying the product should include the following contents: a) Product certificate;
b) Packing list;
c) Product instruction manual;
d) Schematic diagram or installation diagram.
10.5 The crusher and its transmission parts and electrical parts should not be impacted or damp during transportation. The packaging mark should be clear and not easy to fall off:
10.6 The crusher should be placed in the warehouse, and the transmission parts and electrical parts should not be traceable. 5
MT/T 493-2002
ISBN 7-5020-1997-9
9787502019976
Coal of the People's Republic of China
Industry Standard
Crushers for troughs
MT/T493—2002
Published by Coal and Gas Industry Press
(No. 35, Qingyaoju, Yang District, Beijing 100029)Beijing Fangshan Hongwei Printing Factory
Published by Beijing Publishing House of Xinhua BookstorebzxZ.net
Format 880×1230mm1/16 Printing Sheet 1/2
Word Count 9,000 Words
Print Count 1-245
First Printing in August 2002
First Edition in August 2002
ISBN 7-5020-2193-0/F652.2
All rights reserved
Violators will be prosecuted
If there are any quality problems such as missing pages, reversed pages, or loose pages in this book, our company will replace it at our expense.6 Crusher should be placed in the warehouse, transmission parts and electrical parts should not be traceable. 5
MT/T 493-2002
ISBN 7-5020-1997-9
9787502019976
Coal of the People's Republic of China
Industry Standard
Crushers for troughs
MT/T493—2002
Published by Coal and Gas Industry Press
(No. 35, Qingyaoju, Yang District, Beijing 100029)Beijing Fangshan Hongwei Printing Factory
Published by Beijing Publishing House of Xinhua Bookstore
Format 880×1230mm1/16 Printing Sheet 1/2
Word Count 9,000 Words
Print Count 1-245
First Printing in August 2002
First Edition in August 2002
ISBN 7-5020-2193-0/F652.2
All rights reserved
Violators will be prosecuted
If there are any quality problems such as missing pages, reversed pages, or loose pages in this book, our company will replace it at our expense.6 Crusher should be placed in the warehouse, transmission parts and electrical parts should not be traceable. 5
MT/T 493-2002
ISBN 7-5020-1997-9
9787502019976
Coal of the People's Republic of China
Industry Standard
Crushers for troughs
MT/T493—2002
Published by Coal and Gas Industry Press
(No. 35, Qingyaoju, Yang District, Beijing 100029)Beijing Fangshan Hongwei Printing Factory
Published by Beijing Publishing House of Xinhua Bookstore
Format 880×1230mm1/16 Printing Sheet 1/2
Word Count 9,000 Words
Print Count 1-245
First Printing in August 2002
First Edition in August 2002
ISBN 7-5020-2193-0/F652.2
All rights reserved
Violators will be prosecuted
If there are any quality problems such as missing pages, reversed pages, or loose pages in this book, our company will replace it at our expense.
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